From 3deff1a70d5901342f460f8cc36e5d0c5d51c319 Mon Sep 17 00:00:00 2001
From: Christoph Hellwig <hch@lst.de>
Date: Wed, 5 Apr 2017 19:21:03 +0200
Subject: md: support REQ_OP_WRITE_ZEROES

Copy & paste from the REQ_OP_WRITE_SAME code.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
---
 drivers/md/raid5.c | 1 +
 1 file changed, 1 insertion(+)

(limited to 'drivers/md/raid5.c')

diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 7aeb9691c2e1..1725a54042bb 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -7270,6 +7270,7 @@ static int raid5_run(struct mddev *mddev)
 		mddev->queue->limits.discard_zeroes_data = 0;
 
 		blk_queue_max_write_same_sectors(mddev->queue, 0);
+		blk_queue_max_write_zeroes_sectors(mddev->queue, 0);
 
 		rdev_for_each(rdev, mddev) {
 			disk_stack_limits(mddev->gendisk, rdev->bdev,
-- 
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